UPSKILL MATH PLUS

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Use Identity to calculate \(99 × 101\), and \(47 × 53\).
 
Answer:
 
The identity used is ___________________.
 
 
The product \(99 × 101\) can be rewritten as 100−i100+i.
 
The value of \(99 × 101\) is .
 
 The product \(47 × 53\) can be rewritten as 50−i50+i.
 
The value of \(47 × 53\) is .